I can confirm this behavior here.
I've found I can work around it by unsetting KRB5CCNAME in the client
environment.
** Changed in: openssh (Ubuntu)
Importance: Undecided => High
** Changed in: openssh (Ubuntu)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/2028282
Title:
SSH pubkey authetication fails when GSSAPI enabled
Status in openssh package in Ubuntu:
Triaged
Bug description:
Since the upgrade from Ubuntu 20.04 to 22.04 the SSH login via a SSH
pubkey to our servers fails, while password and kerberos are still
working.
$ssh user@server
sign_and_send_pubkey: internal error: initial hostkey not recorded
This seem related to the bugreport at openssh:
https://bugzilla.mindrot.org/show_bug.cgi?id=3406
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: openssh-server 1:8.9p1-3ubuntu0.1
ProcVersionSignature: Ubuntu 5.15.0-76.83-generic 5.15.99
Uname: Linux 5.15.0-76-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CloudArchitecture: x86_64
CloudID: none
CloudName: none
CloudPlatform: none
CloudSubPlatform: config
Date: Thu Jul 20 17:25:01 2023
InstallationDate: Installed on 2020-08-24 (1060 days ago)
InstallationMedia: Ubuntu-Server 20.04.1 LTS "Focal Fossa" - Release amd64
(20200731)
SourcePackage: openssh
UpgradeStatus: Upgraded to jammy on 2023-07-20 (0 days ago)
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